Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of protease inhibitors and other bioactive molecules. Its protected amine and carboxylic acid functionalities make it suitable for peptide coupling and solid-phase synthesis. The stereochemistry at the chiral center allows for selective interactions in drug design, enhancing potency and reducing off-target effects. Commonly employed in the preparation of intermediates for antiviral and anticancer agents.